When I open the project I don’t see any validation errors, but if I open one of the affected JSP files to edit, the errors for that file are reported in the editor pane as well as in the ‘Problems’ tab and they tend to accumulate as I edit more files, obscuring any real errors.
I’ve attached a screenshot of a simple example that illustrates the problem.
Sorry that you are seeing this issue. Thank you for the screenshot.
Unfortunately, this is a regression in MyEclipse 2021. A bug report is already filed for the dev team and we will keep you posted about the fix schedule once we take a closer look at it.
If this is troubling you too much and you do not want to turn off the validation, then the only other option is to downgrade to MyEclipse 2020 (Help > Check for Updates and lock to MyEclipse 2020)